Radiological
Gross Beta / Photon Emitters in your water
Health effects
Beta and photon emitters are radioactive contaminants that can come from natural deposits or from nuclear activity. Long-term exposure increases cancer risk. The federal limit is expressed as an annual dose rather than a simple concentration.
The guideline vs. the legal limit
The federal legal limit is the maximum allowed by law. The EWG health guideline is what independent scientists consider safe — it is often far stricter.
Health guideline (EWG)
No health guideline set
Federal legal limit (MCL)
50 pCi/L
Source: EWG Tap Water Database & EPA MCLs · 2026
What removes Gross Beta / Photon Emitters
We're still cataloging certified systems for Gross Beta / Photon Emitters. A free water test is the fastest way to get a matched recommendation.
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Is Gross Beta / Photon Emitters in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.